Code for paging: (note Dial D(ww1) never worked for me because the "w"s never seemed to wait.)

exten => 5481,1,NoOp(${TIMESTAMP} paging Group 1 Office Page)
exten => 5481,2,NoCDR()
exten => 5481,3,DIAL(SIP/5489,,CG(ext-local-custom^5485^1))

exten => 5485,1,MeetMe(54881|1Axd)
exten => 5485,2,SIPDtmfMode(inband)
exten => 5485,3,Wait(1)
exten => 5485,4,SendDTMF(1)
exten => 5485,5,MeetMe(54881|1xd)

Log:

Apr 26 09:53:25 DEBUG[5063] chan_sip.c: build_route: Contact hop: 5489 
Apr 26 09:53:25 DEBUG[4622] channel.c: Avoiding initial deadlock for 'SIP/5489-007a80a0'
Apr 26 09:53:25 DEBUG[4622] channel.c: Avoiding initial deadlock for 'SIP/5489-007a80a0'
Apr 26 09:53:25 VERBOSE[12613] logger.c: -- SIP/5489-007a80a0 answered SIP/5100-0094a0c0
Apr 26 09:53:25 VERBOSE[12613] logger.c: -- Executing MeetMe("SIP/5100-0094a0c0", "5488|1Axd") in new stack
Apr 26 09:53:25 DEBUG[12613] app_meetme.c: Building dynamic conference '5488'
Apr 26 09:53:25 VERBOSE[12613] logger.c: -- Created MeetMe conference 1023 for conference '5488'
Apr 26 09:53:25 DEBUG[12613] app_meetme.c: Placed channel SIP/5100-0094a0c0 in ZAP conf 1023
Apr 26 09:53:25 VERBOSE[12618] logger.c: -- Executing SIPDtmfMode("SIP/5489-007a80a0", "inband") in new stack
Apr 26 09:53:25 VERBOSE[12618] logger.c: -- Executing Wait("SIP/5489-007a80a0", "1") in new stack
Apr 26 09:53:25 DEBUG[5063] chan_sip.c: Stopping retransmission on '3105-0xc9c220-5087@172.16.8.208' of Response 2: Match Found
Apr 26 09:53:26 VERBOSE[12618] logger.c: -- Executing SendDTMF("SIP/5489-007a80a0", "4") in new stack
Apr 26 09:53:26 DEBUG[12618] channel.c: Scheduling timer at 160 sample intervals
Apr 26 09:53:26 DTMF[12618] channel.c: SIP/5489-007a80a0 : 4
Apr 26 09:53:26 DEBUG[12618] channel.c: Generator got voice, switching to phase locked mode
Apr 26 09:53:26 DEBUG[12618] channel.c: Scheduling timer at 0 sample intervals
Apr 26 09:53:27 DEBUG[5063] chan_sip.c: Scheduled a registration timeout for sip.voipstunt.com id #361193 
Apr 26 09:53:27 DEBUG[12618] channel.c: Auto-deactivating generator
Apr 26 09:53:27 DEBUG[12618] channel.c: Scheduling timer at 0 sample intervals
Apr 26 09:53:27 DEBUG[5063] chan_sip.c: (Provisional) Stopping retransmission (but retaining packet) on '6740280629a2b3560c8acd8629e8b750@172.16.200.5' Request 144: Found
Apr 26 09:53:27 DEBUG[5063] chan_sip.c: Stopping retransmission on '6740280629a2b3560c8acd8629e8b750@172.16.200.5' of Request 144: Match Found
Apr 26 09:53:27 DEBUG[5063] chan_sip.c: Registration successful
Apr 26 09:53:27 DEBUG[5063] chan_sip.c: Cancelling timeout 361193
Apr 26 09:53:27 VERBOSE[12618] logger.c: -- Executing MeetMe("SIP/5489-007a80a0", "5488|1xd") in new stack
Apr 26 09:53:27 DEBUG[12618] app_meetme.c: Placed channel SIP/5489-007a80a0 in ZAP conf 1023
Apr 26 09:53:27 VERBOSE[5050] logger.c: -- Channel 0/2, span 1 got hangup request
.....
.....
Apr 26 09:53:28 DEBUG[5055] manager.c: Manager received command 'Command'
Apr 26 09:53:28 DEBUG[5055] manager.c: Manager received command 'Command'
Apr 26 09:53:28 DEBUG[5055] app_meetme.c: Cmdline: 5488|K
Apr 26 09:53:28 DEBUG[5055] manager.c: Manager received command 'Command'
Apr 26 09:53:28 DEBUG[12613] channel.c: Scheduling timer at 160 sample intervals
Apr 26 09:53:28 VERBOSE[12613] logger.c: -- Playing 'conf-kicked' (language 'en')
Apr 26 09:53:28 DEBUG[12618] channel.c: Scheduling timer at 160 sample intervals
Apr 26 09:53:28 VERBOSE[12618] logger.c: -- Playing 'conf-kicked' (language 'en')